Search (15 results, page 1 of 1)

  • × language_ss:"d"
  • × theme_ss:"Retrievalalgorithmen"
  • × type_ss:"a"
  1. Chakrabarti, S.; Dom, B.; Kumar, S.R.; Raghavan, P.; Rajagopalan, S.; Tomkins, A.; Kleinberg, J.M.; Gibson, D.: Neue Pfade durch den Internet-Dschungel : Die zweite Generation von Web-Suchmaschinen (1999) 0.01
    0.0145474505 = product of:
      0.04364235 = sum of:
        0.029623196 = weight(_text_:internet in 3) [ClassicSimilarity], result of:
          0.029623196 = score(doc=3,freq=2.0), product of:
            0.11352337 = queryWeight, product of:
              2.9522398 = idf(docFreq=6276, maxDocs=44218)
              0.038453303 = queryNorm
            0.2609436 = fieldWeight in 3, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.9522398 = idf(docFreq=6276, maxDocs=44218)
              0.0625 = fieldNorm(doc=3)
        0.014019156 = product of:
          0.042057466 = sum of:
            0.042057466 = weight(_text_:29 in 3) [ClassicSimilarity], result of:
              0.042057466 = score(doc=3,freq=2.0), product of:
                0.13526669 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.038453303 = queryNorm
                0.31092256 = fieldWeight in 3, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.0625 = fieldNorm(doc=3)
          0.33333334 = coord(1/3)
      0.33333334 = coord(2/6)
    
    Date
    31.12.1996 19:29:41
  2. Kanaeva, Z.: Ranking: Google und CiteSeer (2005) 0.01
    0.012692237 = product of:
      0.03807671 = sum of:
        0.025920296 = weight(_text_:internet in 3276) [ClassicSimilarity], result of:
          0.025920296 = score(doc=3276,freq=2.0), product of:
            0.11352337 = queryWeight, product of:
              2.9522398 = idf(docFreq=6276, maxDocs=44218)
              0.038453303 = queryNorm
            0.22832564 = fieldWeight in 3276, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.9522398 = idf(docFreq=6276, maxDocs=44218)
              0.0546875 = fieldNorm(doc=3276)
        0.012156415 = product of:
          0.036469243 = sum of:
            0.036469243 = weight(_text_:22 in 3276) [ClassicSimilarity], result of:
              0.036469243 = score(doc=3276,freq=2.0), product of:
                0.13465692 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.038453303 = queryNorm
                0.2708308 = fieldWeight in 3276, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=3276)
          0.33333334 = coord(1/3)
      0.33333334 = coord(2/6)
    
    Abstract
    Im Rahmen des klassischen Information Retrieval wurden verschiedene Verfahren für das Ranking sowie die Suche in einer homogenen strukturlosen Dokumentenmenge entwickelt. Die Erfolge der Suchmaschine Google haben gezeigt dass die Suche in einer zwar inhomogenen aber zusammenhängenden Dokumentenmenge wie dem Internet unter Berücksichtigung der Dokumentenverbindungen (Links) sehr effektiv sein kann. Unter den von der Suchmaschine Google realisierten Konzepten ist ein Verfahren zum Ranking von Suchergebnissen (PageRank), das in diesem Artikel kurz erklärt wird. Darüber hinaus wird auf die Konzepte eines Systems namens CiteSeer eingegangen, welches automatisch bibliographische Angaben indexiert (engl. Autonomous Citation Indexing, ACI). Letzteres erzeugt aus einer Menge von nicht vernetzten wissenschaftlichen Dokumenten eine zusammenhängende Dokumentenmenge und ermöglicht den Einsatz von Banking-Verfahren, die auf den von Google genutzten Verfahren basieren.
    Date
    20. 3.2005 16:23:22
  3. Hora, M.: Methoden für das Ranking in Discovery-Systemen (2018) 0.01
    0.011815144 = product of:
      0.07089086 = sum of:
        0.07089086 = weight(_text_:bibliothek in 4968) [ClassicSimilarity], result of:
          0.07089086 = score(doc=4968,freq=4.0), product of:
            0.1578712 = queryWeight, product of:
              4.1055303 = idf(docFreq=1980, maxDocs=44218)
              0.038453303 = queryNorm
            0.44904238 = fieldWeight in 4968, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              4.1055303 = idf(docFreq=1980, maxDocs=44218)
              0.0546875 = fieldNorm(doc=4968)
      0.16666667 = coord(1/6)
    
    Content
    Vgl.: https://journals.ub.uni-heidelberg.de/index.php/bibliothek/article/view/57797. Vgl. auch: URN (PDF): http://nbn-resolving.de/urn:nbn:de:bsz:16-pb-577977.
    Source
    Perspektive Bibliothek. 7(2018) H.2, S.2-23
  4. Behnert, C.; Borst, T.: Neue Formen der Relevanz-Sortierung in bibliothekarischen Informationssystemen : das DFG-Projekt LibRank (2015) 0.01
    0.009548077 = product of:
      0.057288464 = sum of:
        0.057288464 = weight(_text_:bibliothek in 5392) [ClassicSimilarity], result of:
          0.057288464 = score(doc=5392,freq=2.0), product of:
            0.1578712 = queryWeight, product of:
              4.1055303 = idf(docFreq=1980, maxDocs=44218)
              0.038453303 = queryNorm
            0.36288103 = fieldWeight in 5392, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.1055303 = idf(docFreq=1980, maxDocs=44218)
              0.0625 = fieldNorm(doc=5392)
      0.16666667 = coord(1/6)
    
    Source
    Bibliothek: Forschung und Praxis. 39(2015) H.3, S.384-393
  5. Weinstein, A.: Hochprozentig : Tipps and tricks für ein Top-Ranking (2002) 0.01
    0.008727819 = product of:
      0.05236691 = sum of:
        0.05236691 = weight(_text_:internet in 1083) [ClassicSimilarity], result of:
          0.05236691 = score(doc=1083,freq=4.0), product of:
            0.11352337 = queryWeight, product of:
              2.9522398 = idf(docFreq=6276, maxDocs=44218)
              0.038453303 = queryNorm
            0.46128747 = fieldWeight in 1083, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              2.9522398 = idf(docFreq=6276, maxDocs=44218)
              0.078125 = fieldNorm(doc=1083)
      0.16666667 = coord(1/6)
    
    Abstract
    Die Suchmaschinen haben in den letzten Monaten an ihren Ranking-Algorithmen gefeilt, um Spamern das Handwerk zu erschweren. Internet Pro beleuchtet die Trends im Suchmaschinen-Marketing
    Source
    Internet Professionell. 2002, H.9, S.66-71
  6. Wilhelmy, A.: Phonetische Ähnlichkeitssuche in Datenbanken (1991) 0.01
    0.007161058 = product of:
      0.042966347 = sum of:
        0.042966347 = weight(_text_:bibliothek in 5684) [ClassicSimilarity], result of:
          0.042966347 = score(doc=5684,freq=2.0), product of:
            0.1578712 = queryWeight, product of:
              4.1055303 = idf(docFreq=1980, maxDocs=44218)
              0.038453303 = queryNorm
            0.27216077 = fieldWeight in 5684, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.1055303 = idf(docFreq=1980, maxDocs=44218)
              0.046875 = fieldNorm(doc=5684)
      0.16666667 = coord(1/6)
    
    Source
    Bibliotheken mit und ohne Grenzen: Informationsgesellschaft und Bibliothek. Der österreichische Bibliothekartag 1990, Bregenz, 4.-8.9.1990, Vorträge und Kommissionssitzungen
  7. Mandl, T.: Web- und Multimedia-Dokumente : Neuere Entwicklungen bei der Evaluierung von Information Retrieval Systemen (2003) 0.01
    0.006982255 = product of:
      0.041893527 = sum of:
        0.041893527 = weight(_text_:internet in 1734) [ClassicSimilarity], result of:
          0.041893527 = score(doc=1734,freq=4.0), product of:
            0.11352337 = queryWeight, product of:
              2.9522398 = idf(docFreq=6276, maxDocs=44218)
              0.038453303 = queryNorm
            0.36902997 = fieldWeight in 1734, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              2.9522398 = idf(docFreq=6276, maxDocs=44218)
              0.0625 = fieldNorm(doc=1734)
      0.16666667 = coord(1/6)
    
    Abstract
    Die Menge an Daten im Internet steigt weiter rapide an. Damit wächst auch der Bedarf an qualitativ hochwertigen Information Retrieval Diensten zur Orientierung und problemorientierten Suche. Die Entscheidung für die Benutzung oder Beschaffung von Information Retrieval Software erfordert aussagekräftige Evaluierungsergebnisse. Dieser Beitrag stellt neuere Entwicklungen bei der Evaluierung von Information Retrieval Systemen vor und zeigt den Trend zu Spezialisierung und Diversifizierung von Evaluierungsstudien, die den Realitätsgrad derErgebnisse erhöhen. DerSchwerpunkt liegt auf dem Retrieval von Fachtexten, Internet-Seiten und Multimedia-Objekten.
  8. Stock, M.; Stock, W.G.: Internet-Suchwerkzeuge im Vergleich (IV) : Relevance Ranking nach "Popularität" von Webseiten: Google (2001) 0.00
    0.0037028994 = product of:
      0.022217397 = sum of:
        0.022217397 = weight(_text_:internet in 5771) [ClassicSimilarity], result of:
          0.022217397 = score(doc=5771,freq=2.0), product of:
            0.11352337 = queryWeight, product of:
              2.9522398 = idf(docFreq=6276, maxDocs=44218)
              0.038453303 = queryNorm
            0.1957077 = fieldWeight in 5771, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.9522398 = idf(docFreq=6276, maxDocs=44218)
              0.046875 = fieldNorm(doc=5771)
      0.16666667 = coord(1/6)
    
  9. Fuhr, N.: Ranking-Experimente mit gewichteter Indexierung (1986) 0.00
    0.0034732614 = product of:
      0.020839568 = sum of:
        0.020839568 = product of:
          0.0625187 = sum of:
            0.0625187 = weight(_text_:22 in 58) [ClassicSimilarity], result of:
              0.0625187 = score(doc=58,freq=2.0), product of:
                0.13465692 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.038453303 = queryNorm
                0.46428138 = fieldWeight in 58, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.09375 = fieldNorm(doc=58)
          0.33333334 = coord(1/3)
      0.16666667 = coord(1/6)
    
    Date
    14. 6.2015 22:12:44
  10. Fuhr, N.: Rankingexperimente mit gewichteter Indexierung (1986) 0.00
    0.0034732614 = product of:
      0.020839568 = sum of:
        0.020839568 = product of:
          0.0625187 = sum of:
            0.0625187 = weight(_text_:22 in 2051) [ClassicSimilarity], result of:
              0.0625187 = score(doc=2051,freq=2.0), product of:
                0.13465692 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.038453303 = queryNorm
                0.46428138 = fieldWeight in 2051, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.09375 = fieldNorm(doc=2051)
          0.33333334 = coord(1/3)
      0.16666667 = coord(1/6)
    
    Date
    14. 6.2015 22:12:56
  11. Hüther, H.: Selix im DFG-Projekt Kascade (1998) 0.00
    0.0029206579 = product of:
      0.017523946 = sum of:
        0.017523946 = product of:
          0.052571837 = sum of:
            0.052571837 = weight(_text_:29 in 5151) [ClassicSimilarity], result of:
              0.052571837 = score(doc=5151,freq=2.0), product of:
                0.13526669 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.038453303 = queryNorm
                0.38865322 = fieldWeight in 5151, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.078125 = fieldNorm(doc=5151)
          0.33333334 = coord(1/3)
      0.16666667 = coord(1/6)
    
    Date
    25. 8.2000 19:55:29
  12. Maylein, L.; Langenstein, A.: Neues vom Relevanz-Ranking im HEIDI-Katalog der Universitätsbibliothek Heidelberg : Perspektiven für bibliothekarische Dienstleistungen (2013) 0.00
    0.002336526 = product of:
      0.014019156 = sum of:
        0.014019156 = product of:
          0.042057466 = sum of:
            0.042057466 = weight(_text_:29 in 775) [ClassicSimilarity], result of:
              0.042057466 = score(doc=775,freq=2.0), product of:
                0.13526669 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.038453303 = queryNorm
                0.31092256 = fieldWeight in 775, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.0625 = fieldNorm(doc=775)
          0.33333334 = coord(1/3)
      0.16666667 = coord(1/6)
    
    Date
    29. 6.2013 18:06:23
  13. Mayr, P.: Bradfordizing als Re-Ranking-Ansatz in Literaturinformationssystemen (2011) 0.00
    0.0017523945 = product of:
      0.010514366 = sum of:
        0.010514366 = product of:
          0.0315431 = sum of:
            0.0315431 = weight(_text_:29 in 4292) [ClassicSimilarity], result of:
              0.0315431 = score(doc=4292,freq=2.0), product of:
                0.13526669 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.038453303 = queryNorm
                0.23319192 = fieldWeight in 4292, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.046875 = fieldNorm(doc=4292)
          0.33333334 = coord(1/3)
      0.16666667 = coord(1/6)
    
    Date
    9. 2.2011 17:47:29
  14. Agosti, M.; Pretto, L.: ¬A theoretical study of a generalized version of kleinberg's HITS algorithm (2005) 0.00
    0.0014603289 = product of:
      0.008761973 = sum of:
        0.008761973 = product of:
          0.026285918 = sum of:
            0.026285918 = weight(_text_:29 in 4) [ClassicSimilarity], result of:
              0.026285918 = score(doc=4,freq=2.0), product of:
                0.13526669 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.038453303 = queryNorm
                0.19432661 = fieldWeight in 4, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=4)
          0.33333334 = coord(1/3)
      0.16666667 = coord(1/6)
    
    Date
    31.12.1996 19:29:41
  15. Fuhr, N.: Modelle im Information Retrieval (2023) 0.00
    0.0014603289 = product of:
      0.008761973 = sum of:
        0.008761973 = product of:
          0.026285918 = sum of:
            0.026285918 = weight(_text_:29 in 800) [ClassicSimilarity], result of:
              0.026285918 = score(doc=800,freq=2.0), product of:
                0.13526669 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.038453303 = queryNorm
                0.19432661 = fieldWeight in 800, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=800)
          0.33333334 = coord(1/3)
      0.16666667 = coord(1/6)
    
    Date
    24.11.2022 17:20:29